HP Surestore 80fx HP StorageWorks Library and Tape Tools FAQ - Windows GUI Ver - Page 26

How much data can I write to the tape?, Dev Perf, Test Size, Full Tape, Drive Performance Results tab

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Page 26 highlights

How much data can I write to the tape? The amount of data written that can be written to a tape is impacted by the compression ratio of the data and the error rate performance of the tape/drive combination. It may not be the same as the capacity marked on the cartridge which assumes 2:1 compression ratio and reasonably good error rate. Use the Device Performance test to measure a specific tape/drive combination. Note - This test will take a long time and overwrite any data on the tape. 1. Install and run L&TT 2. Insert the tape in the appropriate drive. 3. Select the device and click Dev Perf on the toolbar. 4. Set parameters as shown - or choose a different compression ratio - and start. Note the Test Size is set to Full Tape 5. See Drive Performance Results tab for results

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How much data can I write to the tape?
The amount of data written that can be written to a tape is impacted by the
compression ratio of the data and the error rate performance of the
tape/drive combination. It may not be the same as the capacity marked on
the cartridge which assumes 2:1 compression ratio and reasonably good
error rate.
Use the Device Performance test to measure a specific tape/drive
combination.
Note - This test will
take a long time
and
overwrite any data
on the tape.
1.
Install and run L&TT
2.
Insert the tape in the appropriate drive.
3.
Select the device and click
Dev Perf
on the toolbar.
4.
Set parameters as shown – or choose a different compression ratio –
and start. Note the
Test Size
is set to
Full Tape
5. See
Drive Performance Results tab
for results